crocker



parte eine.

JOHN D. onooKER, or NoRwIoaooNNnoTioUT.

Letters Patent No. 99,854, dated Feb/mary 15, 1870.

PICTURE-FRAME 'FASTENINQ The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern.-

Be it known that I, John D. GROGKER, of Norwich, in the county of New London, and'State of Connecticut, have invented a new and improved Fastening for Picture-Fran] es and other purposes; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had tothe accompanying drawings, making part of this specification, in which- Figure l is a view of the back of a picture-frame, having my improved fastening applied to it.

Figure 2 is an enlarged sectional view through the fastening, applied to a section of a frame and holding the stretcher in place.

Figures 3, 4, and 5 are enlarged views, showing the construction ofthe fastening.

Similar letters of reference indicate corresponding parts in the several figures'.

rlhis invention consists in a turn-button, having a beveled lip formed on its periphery, and adapted for being applied, by means of a screw, to the back of a picture-hameand when properly adjusted it will operate to secure the stretcher firmly'in place in such frame, as will be hereinafter explained.

To enable others skilled in the art to understand myY invention, I will describe it.

In the accompanying drawings, g. 1, A represents a picture-f|'ame, having confined within it a stretcher-trarne, B, to which latter the` canvas is applied. Three of my improved fastenngs are represented as applied to this frame, to wit: two are on the side of the stretcher, and one on the opposite side thereof. By turningthe latter fastening so as to release the stretcher on this side, the lstretcher can be removed from the frame withoutdisturbing the other two fastenings.

The fastenings consist of a circular plate or button, a, centrally perforated and countersunk to admit ofits application to the frame Aby means of a screw, g, as shown in iig. 2. rIhis button c may be notched, as

shown in figs. 1 and 2,I or as shown at b .in iig. 3,

whereby a screw-driver or other thin blade may be conveniently used to turn the button when to a frame.

On one side of the center of this button a beveled lip, c, is formed on its periphery, which lip is of a crescentshape and shapened, as shown in figs. 3, 4, and 5.

I prefer to have a portion, e', of the beveled lip c' oblique, or incliried to the flat surfaces of the button, as shown in iig. 5, so that in the act of turning this button to secure the stretcher-frame into the frame A, the lip will force said stretcher-frame firmly into its lace. p I do not confine myself to the precise form'of thel lip c, although I prefer' to adopt the form shown inthe drawings.

The buttons above described are applied to the back surface of the frame A by means of screws, so that these buttons can be turned freely by means of a screwdriver, or other analogous instrument, applied to the notch or notches made into the edgesI or surfaces of the buttons. When the stretcher-frame is applied to theframe A, the buttons are turned so as to force' the beveled lips e into said stretcher-frame, as shown in figs. 1 and 2, which will confine this frame in place and hold it rmly.

Having described my invention,

I claim as a new and improved article of manufacture- A- picture-frame button, which is constructed with a beveled lip, c, on its periphery, as herein described.

JOHN D. OROCKER.

Witnesses:

EDWARD HARLAND, J oHN G. RIPLEY. 

